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Tue, 26 Sep 2023 03:29:05 +0000 From: "Peng Fan (OSS)" Date: Tue, 26 Sep 2023 11:33:20 +0800 Subject: [PATCH v4 4/7] gpio: vf610: add i.MX8ULP of_device_id entry Message-Id: <20230926-vf610-gpio-v4-4-b57b7f6e8368@nxp.com> References: <20230926-vf610-gpio-v4-0-b57b7f6e8368@nxp.com> In-Reply-To: <20230926-vf610-gpio-v4-0-b57b7f6e8368@nxp.com> To: Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Stefan Agner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Marco Felsch Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Peng Fan X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1695699209; l=3299; i=peng.fan@nxp.com; s=20230812; h=from:subject:message-id; bh=JDd/Dfh0RICGNA6i4o6IJd1MoixG0t2bjL+zQLo9U4s=; b=nrW/tDIP9VbgW1pBB9/EU4ERbUoTBcnJsHotxlbehtLsZNixjI8Jl7jSiuF5ILDsQAEodBL9+ edhEzraSX/4BDz4At6G6n8swoBGgaZxI3pghlUHe8tWh2O9Cy3saw9T X-Developer-Key: i=peng.fan@nxp.com; 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Although the Linux Kernel driver gpio-vf610.c could work with fsl,imx7ulp-gpio compatible, it is based on some tricks did in device tree with some offset added to base address. Add a new of_device_id entry for i.MX8ULP. But to make the driver could also support old bindings, check the compatible string first, before check the device data. Signed-off-by: Peng Fan --- drivers/gpio/gpio-vf610.c | 40 ++++++++++++++++++++++++++++++++++------ 1 file changed, 34 insertions(+), 6 deletions(-) diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index dbc7ba0ee72c..49867d5db642 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -25,6 +25,7 @@ struct fsl_gpio_soc_data { /* SoCs has a Port Data Direction Register (PDDR) */ bool have_paddr; + bool have_dual_base; }; struct vf610_gpio_port { @@ -60,13 +61,22 @@ struct vf610_gpio_port { #define PORT_INT_EITHER_EDGE 0xb #define PORT_INT_LOGIC_ONE 0xc +#define IMX8ULP_GPIO_BASE_OFF 0x40 +#define IMX8ULP_BASE_OFF 0x80 + static const struct fsl_gpio_soc_data imx_data = { .have_paddr = true, + .have_dual_base = true, +}; + +static const struct fsl_gpio_soc_data imx8ulp_data = { + .have_paddr = true, }; static const struct of_device_id vf610_gpio_dt_ids[] = { { .compatible = "fsl,vf610-gpio", .data = NULL, }, { .compatible = "fsl,imx7ulp-gpio", .data = &imx_data, }, + { .compatible = "fsl,imx8ulp-gpio", .data = &imx8ulp_data, }, { /* sentinel */ } }; @@ -263,19 +273,37 @@ static int vf610_gpio_probe(struct platform_device *pdev) struct gpio_irq_chip *girq; int i; int ret; + bool dual_base = false; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; port->sdata = of_device_get_match_data(dev); - port->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(port->base)) - return PTR_ERR(port->base); - port->gpio_base = devm_platform_ioremap_resource(pdev, 1); - if (IS_ERR(port->gpio_base)) - return PTR_ERR(port->gpio_base); + /* support old compatible strings */ + if (device_is_compatible(dev, "fsl,imx7ulp-gpio") && + (device_is_compatible(dev, "fsl,imx93-gpio") || + (device_is_compatible(dev, "fsl,imx8ulp-gpio")))) + dual_base = true; + + if ((port->sdata && port->sdata->have_dual_base) || dual_base) { + port->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(port->base)) + return PTR_ERR(port->base); + + port->gpio_base = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(port->gpio_base)) + return PTR_ERR(port->gpio_base); + } else { + port->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(port->base)) + return PTR_ERR(port->base); + + port->gpio_base = port->base + IMX8ULP_GPIO_BASE_OFF; + port->base = port->base + IMX8ULP_BASE_OFF; + } + port->irq = platform_get_irq(pdev, 0); if (port->irq < 0)